(command.CommandList
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    (C {(Id.Lit_Other ':')} 
      {
        (braced_var_sub
          token: (Token id:Id.VSub_Name val:srcdir span_id:55)
          suffix_op: (suffix_op.Unary op_id:Id.VTest_Equals arg_word:{(.)})
        )
      }
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: (C {(.)} {(DQ ($ Id.VSub_DollarName '$srcdir') (/init.sh))})
          terminator: (Token id:Id.Op_Semi val:';' span_id:66)
        )
        (C {(path_prepend_)} {(.)})
      ]
    )
    (command.ShAssignment
      pairs: [(assign_pair lhs:(sh_lhs_expr.Name name:fail) op:assign_op.Equal rhs:{(0)} spids:[73])]
    )
    (command.ShFunction
      name: test_compare
      body: 
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          children: [
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {(touch)} {(empty)})
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [90]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{(echo)} {(xyz)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:98)
                      fd: -1
                      arg_word: {(Id.KW_In in)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [104]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{(compare)} {(/dev/null)} {(/dev/null)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:115)
                      fd: -1
                      arg_word: {(out)}
                    )
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'2>' span_id:118)
                      fd: 2
                      arg_word: {(err)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [123]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {(test)} {(-s)} {(out)})
                (C {(fail_)} 
                  {
                    (DQ ('out not empty: ') 
                      (command_sub
                        left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:139)
                        command_list: (command.CommandList children:[(C {(cat)} {(out)})])
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{(Id.Lit_Star '*') (x) (Id.Lit_Star '*')}]
                  spids: [157 160 162 -1]
                )
                (case_arm
                  pat_list: [{(Id.Lit_Star '*')}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (C {(test)} {(-s)} {(err)})
                        (C {(fail_)} 
                          {
                            (DQ ('err not empty: ') 
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:179)
                                command_list: (command.CommandList children:[(C {(cat)} {(err)})])
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [164 165 185 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{(compare)} {(/dev/null)} {(empty)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:197)
                      fd: -1
                      arg_word: {(out)}
                    )
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'2>' span_id:200)
                      fd: 2
                      arg_word: {(err)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [205]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {(test)} {(-s)} {(out)})
                (C {(fail_)} 
                  {
                    (DQ ('out not empty: ') 
                      (command_sub
                        left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:221)
                        command_list: (command.CommandList children:[(C {(cat)} {(out)})])
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{(Id.Lit_Star '*') (x) (Id.Lit_Star '*')}]
                  spids: [235 238 240 -1]
                )
                (case_arm
                  pat_list: [{(Id.Lit_Star '*')}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (C {(test)} {(-s)} {(err)})
                        (C {(fail_)} 
                          {
                            (DQ ('err not empty: ') 
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:257)
                                command_list: (command.CommandList children:[(C {(cat)} {(err)})])
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [242 243 263 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{(compare)} {(Id.KW_In in)} {(Id.KW_In in)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:275)
                      fd: -1
                      arg_word: {(out)}
                    )
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'2>' span_id:278)
                      fd: 2
                      arg_word: {(err)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [283]
                    )
                  ]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {(test)} {(-s)} {(out)})
                (C {(fail_)} 
                  {
                    (DQ ('out not empty: ') 
                      (command_sub
                        left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:299)
                        command_list: (command.CommandList children:[(C {(cat)} {(out)})])
                      )
                    )
                  }
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{(Id.Lit_Star '*') (x) (Id.Lit_Star '*')}]
                  spids: [313 316 318 -1]
                )
                (case_arm
                  pat_list: [{(Id.Lit_Star '*')}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (C {(test)} {(-s)} {(err)})
                        (C {(fail_)} 
                          {
                            (DQ ('err not empty: ') 
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:335)
                                command_list: (command.CommandList children:[(C {(cat)} {(err)})])
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [320 321 341 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.Simple
                  words: [{(compare)} {(/dev/null)} {(Id.KW_In in)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:353)
                      fd: -1
                      arg_word: {(out)}
                    )
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'2>' span_id:356)
                      fd: 2
                      arg_word: {(err)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [361]
                    )
                  ]
                )
              ]
            )
            (command.Simple
              words: [{(cat)}]
              redirects: [
                (redir.HereDoc
                  op: (Token id:Id.Redir_DLess val:'<<' span_id:367)
                  fd: -1
                  here_begin: 
                    {
                      (word_part.EscapedLiteral
                        token: (Token id:Id.Lit_EscapedChar val:'\\E' span_id:368)
                      ) (OF)
                    }
                  here_end_span_id: 379
                  stdin_parts: [
                    ('diff -u /dev/null in\n')
                    ('--- /dev/null\t1970-01-01\n')
                    ('+++ in\t1970-01-01\n')
                    ('+xyz\n')
                  ]
                )
                (redir.Redir
                  op: (Token id:Id.Redir_Great val:'>' span_id:371)
                  fd: -1
                  arg_word: {(exp)}
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {(compare)} {(exp)} {(out)})
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [389]
                    )
                  ]
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{(Id.Lit_Star '*') (x) (Id.Lit_Star '*')}]
                  spids: [399 402 404 -1]
                )
                (case_arm
                  pat_list: [{(Id.Lit_Star '*')}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (C {(test)} {(-s)} {(err)})
                        (C {(fail_)} 
                          {
                            (DQ ('err not empty: ') 
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:421)
                                command_list: (command.CommandList children:[(C {(cat)} {(err)})])
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [406 407 427 -1]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.Simple
                  words: [{(compare)} {(empty)} {(Id.KW_In in)}]
                  redirects: [
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'>' span_id:439)
                      fd: -1
                      arg_word: {(out)}
                    )
                    (redir.Redir
                      op: (Token id:Id.Redir_Great val:'2>' span_id:442)
                      fd: 2
                      arg_word: {(err)}
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:fail)
                      op: assign_op.Equal
                      rhs: {(1)}
                      spids: [447]
                    )
                  ]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.Simple
                          words: [{(grep)} {(Id.Lit_Other '@')} {(out)}]
                          redirects: [
                            (redir.Redir
                              op: (Token id:Id.Redir_Great val:'>' span_id:463)
                              fd: -1
                              arg_word: {(/dev/null)}
                            )
                          ]
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:465)
                    )
                  ]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
                        (command.Simple
                          words: [
                            {(sed)}
                            {(SQ (Token id:Id.Lit_Chars val:'s/\t.*//;/^@@/d' span_id:493))}
                            {(out)}
                          ]
                          redirects: [
                            (redir.Redir
                              op: (Token id:Id.Redir_Great val:'>' span_id:498)
                              fd: -1
                              arg_word: {(k)}
                            )
                          ]
                        )
                        (C {(mv)} {(k)} {(out)})
                      ]
                    )
                    (command.Simple
                      words: [{(cat)}]
                      redirects: [
                        (redir.HereDoc
                          op: (Token id:Id.Redir_DLess val:'<<' span_id:513)
                          fd: -1
                          here_begin: 
                            {
                              (word_part.EscapedLiteral
                                token: (Token id:Id.Lit_EscapedChar val:'\\E' span_id:514)
                              ) (OF)
                            }
                          here_end_span_id: 524
                          stdin_parts: [('--- empty\n') ('+++ in\n') ('+xyz\n')]
                        )
                        (redir.Redir
                          op: (Token id:Id.Redir_Great val:'>' span_id:517)
                          fd: -1
                          arg_word: {(exp)}
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DPipe]
                      children: [
                        (C {(compare)} {(exp)} {(out)})
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name name:fail)
                              op: assign_op.Equal
                              rhs: {(1)}
                              spids: [534]
                            )
                          ]
                        )
                      ]
                    )
                  ]
                  spids: [455 467]
                )
              ]
            )
            (command.Case
              to_match: {($ Id.VSub_Hyphen '$-')}
              arms: [
                (case_arm
                  pat_list: [{(Id.Lit_Star '*') (x) (Id.Lit_Star '*')}]
                  spids: [547 550 552 -1]
                )
                (case_arm
                  pat_list: [{(Id.Lit_Star '*')}]
                  action: [
                    (command.AndOr
                      ops: [Id.Op_DAmp]
                      children: [
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                        (C {(fail_)} 
                          {
                            (DQ ('err not empty: ') 
                              (command_sub
                                left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:569)
                                command_list: (command.CommandList children:[(C {(cat)} {(err)})])
                              )
                            )
                          }
                        )
                      ]
                    )
                  ]
                  spids: [554 555 575 -1]
                )
              ]
            )
          ]
        )
    )
    (C {(test_compare)})
    (C {(Exit)} {($ Id.VSub_DollarName '$fail')})
  ]
)